Molding apparatus



H. B. HARLOW.

MOLDING APPARATUS. APPLICATION man JluNf. 14, 1920.

Patented Dc.' 27, 1921.

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H. B. HARIow.

y MOLDING APPARATUS. v APPLICATION FILED .IUNE I4.. 1920.

Patented Dec. 27, 1921.

2 SHEETS-SHEET 2.

I WzL/Vrais /ZMW HARRY .'B. HARLOW, 0F ALTON, ILLINOS, ASSIGNOR T0 COMMONWEALTH `S'JEIEL I COMPANY, OF'ST. LOUS, MISSOURI, A CORPORATON 0F NEW JERSEY.

v :nomme Arrsmirus. I

To all who/m. t may concern:

Be it known that l, HARRY B. HARLow, a citizen of the United States, residing at Altomin the'county of Madison and State of Illinois, have invented a new and useful Improvement in. Molding Apparatus, of which the following is a specification.

' My invention relates to molding apparatus, and has Vfor its Vobject to provide improved means in combination with the molding form for a casting for holding down the cover core, the said means in so doing being automatically lockedY to the said form and adjustable relatively to the plane of the top surface and position of the cover core.

My invention which is` especially appli-x cable to the mold for which Letters Patent of the United States were granted to Andrew F. Howe, June 20, 1911, No. 995,968, consists in features of novelty as hereinafter described and claimed, reference being had to the accompanying drawing forming part of this specification, whereon,

Figure 1, is a top plan view of a molding form and mold having a plurality of cover cores with my invention applied thereto;

Fig. 2, a verticaltransverse section there` through on line 2, 2, in Fig. l; Fig. 8, a top plan view to enlarged scale of a clamping bar and bearing plate forming parts of my invention, and Fig. 4c, a side elevation of the same.

Like letters and numerals of reference denote like parts in all the figures.

a represents a metallic molding form Vor flask which may be of any suitable configuration according to the nature of the desired casting, and is in the present case rectangularshaped, open at the top and preferably closed at the bottom, the outer sides or walls 1 of the form a being preferably channel-shaped in cross section with their flanges outward yand united at the corners, while the inner sides 1 of the form a, which are outwardly flanged at the top in a similar manner to the outer sides 1, are arranged parallel to the latter respectively, at a suitable distance therefrom so as to form an open reetangular-shaped space or well Z) in the middle of the form a forthe purpose hereinafter more particularly referred to.

From the inner face of each side l, 1', re-

Specification of Letters Patent. Patented Dc. 27, 1921. Application led June 14, 1920. Serial No. 388,967.

the form a and preferably unite with the bottom member 3 from which project upward within and preferably entirely across the form a similar ribs 2. 0n 'the upper edges of the ribs 2 is laid a base piece (or series thereof) 4 composed of suitable baked molding material, which is adapted to support a series of outer and inner sectional blocks 5, 5', composed of suitablev baked molding material and forming respectively a corresponding part of the mold, the blocks 5, 5', being arranged in proper order within the form a conformably to the shape and configuration of the moi-ld; cavities 6, 6', while the spaces within the form a unoccupied bythe blocks 5, 5, are preferably filled with sand or other suitable material w which is lightly packed about the blocks 5, 5, in a similar manner to that described in the plete mold which is then covered by pref-v erab'ly a plurality of cover cores c composed of suitable baked molding material and of varying size and arrangement according to the configuration of the mold, the cover cores c butting edgewise (or not) against each other as shown.

Projecting preferably outward from the outer and inner sides 1, l', respectively of the form a immediately'beneath and at a suitable distance from the top ange thereof,

is a rib 7 which preferablyV extends the entire length of the side;vor if desired lugs or equivalent proj ect-ions may be substituted for the rib 7. vertically through the said flange is formed at intervals alongthe same a preferably circular hole 8 and through the rib 7 (or corresponding lug4 or projection) oppositeto each hole 8 is formed a similar hole 8.

Z represents (see particularly Figs. 3 and an inverted L-shaped bar having its shank 9 preferably circular and somewhat diametrically smaller than the holes 8, 8 the overhanging member 9 of the bar d terminating at its depending end in a ball 10 which is adapted to engage in a correspondingly shaped socket 10 formed on the upper surface of a preferably rectangular-shaped bearing platee whichl is adapted to bearupon the cover core o. l

For clamping either of the cover cores o, as for example the cover core c shown to the left in Figs. 1 and 2, the shank 9 of the bar d is inserted and dropped endwise through the holes 8, 8', and as the bearing plate e is closing down upon the top surface ot the cover core 0, the shank 9 of the bar al is forced out of alinement and becomes jammed against the opposing edges ofthe holes 8, 8, thereby automatically clamping` the bearing plate e against the top ot, and securely holding doivn the cover core c, the bearing plate e at the same time, oiving to the ball and socket joint thereorP with the bar (Z, accommodating itselil to any inequality or' the top surface of the cover core c. li' desired a tighter clamping of the bearing plate c to the cover core c may be effected by hammer blows on the top of the shank 9 oi the bar ul. On striking the bar l laterally near the top its shank 9 will be disengaged and the bar a7 free for removal. Y

It will be here noted that in the present case, the holes 8, 8', through the top flanges and ribs (or lugs) 7 ot the outer sides l are shown respectively as bein@ directly opposite to the centers of the correspondingouter cover cores c, and those o1c the inner sides l diagonal to the centers ot the inner cover cores c, the directions ot the i ars CZ being so indicated by dotted lines, but the bars d may be otherwise arranged in any desired direction according to the varying shapes and positions of the cover cores to be secured thereby, and by having a Well or open space Z) in the middle (or other convenient part) of the molding 'l'orm a the bars CZ may be applied to those cover cores Which otherwise would be inaccessible to the ordinary sized bar. v

l claim l. ln a mold, the combination with a molding form and a plurality of cover cores, of individual means each adapted to independently secure a cover core to the 'form and to adjust itseltl to the plane of the top surface of its individual cover core.

2. ln a mold, the combination vvith a molding torni and a plurality ot cover cores, of individual means each adapted to independently clamp a cover core to the t'orin and to adjust itself to the plane oi the top surface of its individual cover core and to the height of its individual cover core.

3. ln a mold, the combination vvith a molding form and a plurality ot cover cores, of individual means each adapted to independently clamp a cover core to the torni, each of said means comprisingan inverted L-shaped bar, a bearing plate, and a universal joint between said bar and plate.

4i.' ln a composite mold, a plurality of sectional mold blocks vassembled in cooperative relation, a plurality of cover cores completing the sections of the mold, and individual clamping means tor each ot' said cover cores.

5. ln a composite mold, a mold form, a plurality ot sectional mold blocks assembled in cooperate relation, a plurality of cover cores completing the mold sections, and a plurality of clamps mounted on said form, each securing one ot said cover cores and the adjacent mold blocks in assembled position.

6. in a composite mold, a mold form, spaced horizontal vflanges on the outside ot said i'langes, a plurality of mold blocks assembled in mold forming relation Within said form, a plurality or" cover cores placed on said blocks, and individual clamps removably mounted in each pair of said alined holes, each adapted to secure one ot said cover form, substantially alined holes in said cores and its associated mold blocks in position.

7. ln a composite mold, a mold form having outside Walls and inside Walls spaced therefrom, and a bottom Wall connecting said outside and inside Walls, vertically spaced horizontal ianges on Veach of said Walls, a plurality ot holes in said flanges ai'- ranged in pairs, the holes of each pair being in substantial vertical alinement, a plurality oi'f mold blocks carried by said bottom Wall between said outside and inside Walls, a plurality oi cover cores tor said mold blocks,

and individua-l cover core clamps detachably mounted in respective pairs of said holes, each adapted to secure one of said cover cores in position.

HARRY B. HARLOl/V.' 

